bauer



(No Model.) -2 Sheets-Sheet 1. J. C. BAUER.

- DIE STOCK. No. 330,868. I Patented Nov. 24, 1885.

' wimeooao N. PETERS Phulcllkhogmphar, Wnshi nnnnnnnn C.

(No Model.) 2 Sheets-Sheet 2.

J. 0. BAUER.

DIE STOGK.

No. 330,868. Patented Nov. 24, 1885.

Al Q? 4' w vx\\\\ wi/tmaoow 53% A Gm wuamaoz name Stains JOHN CHARLES BAUER,

PATENT Uterine.

OF LONDON, ENGLAND.

DI E- -STOCK.

iPl-iGII-ICATIUDI forming part of Letters Patent No. 330,868, dated November 24, 1885.

Application filed April 23, 1885. Serial N0.1G3,153.

(No model.) Patented in England March 17, 1884, No. 5,001; in Belgium September 4, 1884, No. 66,218; in France October 9, 1884, No. 164,711; and in Austria'Hnngary December 3, 1884, No.37,163 and To aZZ whom it may concern.-

Be it known that 1, JOHN CHARLES BAUER, a subject of the Queen of Great Britain, residing at London, England, have invented certain new and useful Improvements in Die- Stocks, of which the following is a specification.

This invention relates to improvements in stocks and dies, the improvements having chiefly for object to combine in one tool an entire set of adjustable dies, with simple means for adjusting the same.

In carrying out my invention I employ two disks turning 011 centers or pivots, one of which is eccentric. Around the periphery of each disk, and at suitable distances apart, I form the cuttingthreads in such a manner that when the disks are properly adjusted the corresponding threads to form a pair of dies will be brought into working position. The disks are held together and in position by a plate or plates and by screws on the pivots of the disks.

The tool is provided with suitable handles, and in place of employing an eccentric pivot operated by a spanner, I can employ screws to tighten up the disks.

In order to enable my invention to be fullyunderstood, I will proceed to describe the same by reference to the accompanying drawings, in which- Figure 1 is a plan, Fig. 2 a horizontal section, and Fig. 8 a longitudinal vertical section, of a stock and dies constructed accord ing to my invention, and in which one of the disks turns on an eccentric pivot and the other disk on a concentric pivot. Figs. 4., 5, and 6 are similar views to Figs. 1, 2, and 3, but in which both disks turn upon concentric pivots. Figs. 7 8, and 9 are also similar views to Figs. 1, 2, and 3, but showing an arrangement in which the disks are caused to approach each other by means of screws.

Similar letters in all the figures represent similar parts.

I will first describe my invention by refer ence to Figs. 1, 2, and 8.

a and a are the two disks, and Z) and b are the centers or pivots on which the disks a and a turn, the pivot b being eccentric to its corresponding disk, a. c c c are the cutting threads or dies formed at suitable distances apart around the periphery of each of the disks a and a in such a manner that when the disks are properly adjusted by rotating the same the corresponding threads to form a pair of dies will be brought into working position. (i d are the plates and e e the screws serving to hold the disks a and a in position between the handles (1 d. The screws 0 and 6 may be formed on the pivots b and b in the manner shown, the screw 6 having a hexagonal head, and the screw 6 having a nut for clamping the disks a and a. The eccentric pivot 12 is formed with a square end, as clearly shown in Fig. 1, to operate its eccentric part. f f are openings in the plates d cl to admit of the insertion of the bolt, pipe, or other article on which the screw-thread is to be out.

To adjust the dies,(the plates and disks being clamped,) the disks a and a are slackened by turning the screw 0 and the nut of the screw 0 by a spanner or otherwise. The required pair of dies, 0, are then brought into position by turning the disks a and a, which are then again clamped. The eccentric pivot b is then turned, and the pair of dies will be thereby closed into their cutting position.

The arrangement shown in Figs. 4, 5, and 6 is similar to that hereinbefore described,and represented in Figs. 1, 2, and 3, with the exception that both the pivots of the disks a and a are concentric. The lower plate, cl, is dis pensed with, and the upper plate is shown formed in one piece with the handles cl (1. The operation is also similar to that hereinbefore described, except that as there is no plate d in which the pivots b and b have their bcaring are elongated to allow of this lateral movement of the disks a and a.

It will be understood that although I have shown the screw stock and dies represented in Figs. 1, 2, and 3 as having two plates, d d, I may in some cases dispense with one of the said plates.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is r 1. In a screw stock and dies, a pair of rotatable disks, each provided with corresponding screw-cutters of different sizes, as described, in combination with a shaft journaled in the stock, the shaft having thereon an eccentric, which serves as the journal of one of the said disks, substantially as shown and described.

2. In a screw stock and dies, the combina- 20 tion, with the disks a a, each provided with cutting-threads of various sizes, of adj ustablc rods g, inclosed within the handles, and having inner curved ends, as set forth, having screw-caps for operating said rods, all sub- 25 

